Golf ball compositions based on blends of olefinic ionomers and metallocene catalyzed polymers
First Claim
Patent Images
1. A golf ball comprising a cover and a core wherein the cover comprises an at least partially miscible blend of at least one ionomer and at least one metallocene catalyzed polymer having the formula:
- ##STR3## wherein R1 is hydrogen;
R2 is hydrogen or lower alkyl selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, and C5 H11 ;
R3 is hydrogen or lower alkyl selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, and C5 H11 ;
R4 is selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, C5 H11, C6 H13, C7 H15, C9 H19, C10 H21, and phenyl, in which from 0 to 5 H within R4 can be replaced by substituents selected from the group consisting of COOH, SO3 H, NH2, F, Cl, Br, I, OH, SH, silicone, lower alkyl esters and lower alkyl ethers, with the proviso that R3 and R4 can be combined to form a bicyclic ring;
R5 is hydrogen, lower alkyl including C1 -C5, carbocyclic, aromatic or heterocyclic;
R6 is hydrogen, lower alkyl including C1 -C5, carbocyclic, aromatic or heterocyclic; and
wherein x ranges from 99 to 50 weight per cent of the polymer, y ranges from 1 to 50 weight per cent of the polymer and z ranges from 0 to 49 weight per cent of the polymer.
3 Assignments
0 Petitions
Accused Products
Abstract
The disclosed invention provides novel golf ball compositions which contain olefinic based ionomers and non-ionic olefinic copolymers produced by use of metallocene catalysts. These compositions exhibit improved mechanical properties such as tensile and flexural properties. Golf balls which employ these blends provide ball properties and performance similar to and in some cases better than the state of the art ionomer based golf balls.
-
Citations
29 Claims
-
1. A golf ball comprising a cover and a core wherein the cover comprises an at least partially miscible blend of at least one ionomer and at least one metallocene catalyzed polymer having the formula:
- ##STR3## wherein R1 is hydrogen;
R2 is hydrogen or lower alkyl selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, and C5 H11 ; R3 is hydrogen or lower alkyl selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, and C5 H11 ; R4 is selected from the group consisting of CH3, C2 H5, C3 H7, C4 H9, C5 H11, C6 H13, C7 H15, C9 H19, C10 H21, and phenyl, in which from 0 to 5 H within R4 can be replaced by substituents selected from the group consisting of COOH, SO3 H, NH2, F, Cl, Br, I, OH, SH, silicone, lower alkyl esters and lower alkyl ethers, with the proviso that R3 and R4 can be combined to form a bicyclic ring; R5 is hydrogen, lower alkyl including C1 -C5, carbocyclic, aromatic or heterocyclic; R6 is hydrogen, lower alkyl including C1 -C5, carbocyclic, aromatic or heterocyclic; and wherein x ranges from 99 to 50 weight per cent of the polymer, y ranges from 1 to 50 weight per cent of the polymer and z ranges from 0 to 49 weight per cent of the polymer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 24, 25)
- ##STR3## wherein R1 is hydrogen;
- 8. A golf ball having a core and a cover, said cover comprising a blend of two or more ionomer resins with one or more non-ionic copolymers of an olefin with attached lower alkyl groups having from about 1 to about 18 carbon atoms said olefin comonomer produced using a metallocene catalyst.
-
10. A golf ball having a core and a cover wherein said cover comprises one or more ionomer resins having a flexural modulus of from about 50 psi to about 150,000 psi and a non-ionic metallocene catalyzed copolymer of an olefin having a flexural modulus of from about 500 psi to 200,000 psi.
- 11. A golf ball having a core and a cover wherein said cover comprises an at least partially miscible blend of at least one ionomer resin and at least one polyolefin resin, wherein the polyolefin resin is formed with a metallocene catalyst.
-
12. A golf ball having a core and a cover wherein said cover comprises from about 99 to 1 phr of at least one ionomer resin chosen from the group consisting of ethylene-methacrylic acid and ethylene-acrylic acid copolymers neutralized by mono, di or tri-valent metallic derivatives;
- and from about 1 to 99 phr of at least one non-ionic metallocene catalyzed copolymer of an olefin with a lower alkyl substituent having from about 1 to about 18 carbon atoms.
- View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
-
13. A golf ball having improved spin comprising a core and a cover wherein said cover comprises from about 95 to 5 phr of at least one ionomer resin chosen from the group consisting of ethylene-methacrylic acid and ethylene-acrylic acid copolymers neutralized by mono, di or tri-valent metallic derivatives;
- and from about 5 to 95 phr of at least one non-ionic metallocene catalyzed copolymer of an olefin with a lower alkyl substituent having from about 1 to about 18 carbon atoms.
- View Dependent Claims (22, 23)
Specification